Stimulus (physiology) - Wikipedia
WEBIn physiology, a stimulus[1] is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity (excitability). [2] .
1.3 Homeostasis – Anatomy & Physiology - Open Educational …
WEBThe first contractions of labor (the stimulus) push the baby toward the cervix (the lowest part of the uterus). The cervix contains stretch-sensitive nerve cells that monitor the degree of stretching (the sensors).
Nervous system | Definition, Function, Structure, & Facts
WEBSep 13, 2024 · Nervous system, organized group of cells specialized for the conduction of electrochemical stimuli from sensory receptors. The nervous system allows for the almost instantaneous transmission of electrical impulses from one region of the body to another. Learn about the nervous systems of different living organisms.
13.1 Sensory Receptors – Anatomy & Physiology
WEBStimuli in the environment activate specialized receptors or receptor cells in the peripheral nervous system. Different types of stimuli are sensed by different types of receptors. Receptor cells can be classified into types on the basis of three different criteria: cell type, position, and function.
Stimulus - Vocab, Definition, and Must Know Facts | Fiveable
WEBA stimulus is any change in the environment that can make an organism or a part of the body react. In the context of the nervous system, it's what prompts nerve cells to transmit signals to the brain or spinal cord.
Stimulus - Definition and Examples - Biology Online Dictionary
WEBMar 28, 2024 · What is a stimulus? In biology, we can define stimulus as the “detectable change (physical or chemical) in the environment of an organism that results in some functional activity”. For example, sunlight acts as a stimulus for plants that helps them grow or move towards it.
1.5 Homeostasis - Anatomy and Physiology 2e - OpenStax
WEBThe first contractions of labor (the stimulus) push the baby toward the cervix (the lowest part of the uterus). The cervix contains stretch-sensitive nerve cells that monitor the degree of stretching (the sensors).
Coordination and control - The nervous system - BBC
WEBstimuli. (changes in the environment). The coordination centre, such as the brain, spinal cord or pancreas, which receives and processes information from receptors around the body. Effectors....
Human nervous system - Reflex Actions, Motor Pathways, …
WEBLight is the stimulus; impulses reach the brain via the optic nerve; and the response is conveyed to the pupillary musculature by autonomic nerves that supply the eye. Another reflex involving the eye is known as the lacrimal reflex.
Physiology, Sensory Receptors - StatPearls - NCBI Bookshelf
WEBAug 14, 2023 · The bodily area where a stimulus can affect a sensory receptor is called receptive field. This attribute in form of a physical dimension is vital to encode an accurate location of a stimulus.